gpio: da9052: Be sure to clamp return value
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.
Cc: Ashish Jangam <ashish.jangam@kpitcummins.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-da9052.c b/drivers/gpio/gpio-da9052.c
index 2e9578e..38bd8f1 100644
--- a/drivers/gpio/gpio-da9052.c
+++ b/drivers/gpio/gpio-da9052.c
@@ -89,15 +89,12 @@
DA9052_STATUS_D_REG);
if (ret < 0)
return ret;
- if (ret & (1 << DA9052_GPIO_SHIFT_COUNT(offset)))
- return 1;
- else
- return 0;
+ return !!(ret & (1 << DA9052_GPIO_SHIFT_COUNT(offset)));
case DA9052_OUTPUT_PUSHPULL:
if (da9052_gpio_port_odd(offset))
- return ret & DA9052_GPIO_ODD_PORT_MODE;
+ return !!(ret & DA9052_GPIO_ODD_PORT_MODE);
else
- return ret & DA9052_GPIO_EVEN_PORT_MODE;
+ return !!(ret & DA9052_GPIO_EVEN_PORT_MODE);
default:
return -EINVAL;
}